Most popular questions and responses by nj
  1. physics

    A stationary bicycle is raised off the ground, and its front wheel (m = 1.3 kg) is rotating at an angular velocity of 12.3 rad/s (see the drawing). The front brake is then applied for 3.0 s, and the wheel slows down to 3.3 rad/s. Assume that all the mass

    asked on April 19, 2016
  2. chemistry

    A voltaic cell at 25oC consists of Mn/Mn2+ and Cd/Cd2+ half-cells with the initial concentrations [Mn2+] = 0.100 M and [Cd2+] = 0.0100 M. Use the Nernst equation to calculate E for this cell. Cd+2(aq) + 2e- = Cd(s) . . . . . . Eo = -0.40 V Mn+2(aq) + 2e- =

    asked on November 30, 2008
  3. physics

    A wrecking ball is hanging at rest from a crane when suddenly the cable breaks. The time it takes for the ball to fall halfway is 1.6 seconds. Find the time it takes for the ball to fall from rest all the way to the ground.

    asked on September 16, 2008
  4. physics

    A rocket is used to place a synchronous satellite in orbit about the earth. What is the speed of the satellite in orbit?

    asked on October 1, 2008
  5. physics

    A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.4 x 10^5 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 5.0 x

    asked on October 15, 2008
  6. physics

    The drawing shows a jet engine suspended beneath the wing of an airplane. The weight W with arrow of the engine is 11900 N and acts as shown in the drawing. In flight the engine produces a thrust T with arrow of 64500 N that is parallel to the ground. The

    asked on April 17, 2016
  7. math

    Econocar offers two plans for one-week rentals of a compact car. A rate of $295 per week includes the first 1000 km. Extra distance costs 15 cents per kilometre. A weekly rate of $389 allows unlimited driving. Rounded to the nearest kilometre, beyond what

    asked on May 3, 2014
  8. math

    The retail price of a pair of skis consists of the wholesale cost to the retailer plus the retailer's markup. If skis retailing for $712 are marked up by 60% of the wholesale cost, what is that wholesale cost?

    asked on May 3, 2014
  9. physics

    A 9.94-m ladder with a mass of 21.6 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 226 N. At the instant the top of the ladder leaves the ground, the ladder experiences an angular

    asked on April 19, 2016
  10. Physics

    1. How much work must be done to stop a 1750 kg truck traveling at 110.0 km/h?

    asked on May 1, 2013
  11. Math (Trig)

    Find the indicated ratios in the triangle. Right triangle with a height of 2.56cm length of 4.65cm and hypotenuse of 5.31cm a. tan A b. cos C c. sin C How do I figure this out?

    asked on January 7, 2013
  12. Physics

    The average emf induced in the secondary coil is 0.12 V when the current in the primary coil changes from 3.8 to 1.1 A in 0.14 s. What is the mutual inductance of the coils?

    asked on March 6, 2009
  13. Algebra 2

    How do I write equations for geometric sequences? example question: 1, 3/2, 9/4, 27/8 an= a(n-1) * r^n where r is the value of dividing one term by the term before. For instance, in the above, ao= 1, r= a3/a2= (27/8)/(9/4)= 3/2 a1= 1*3/2 a3= 1*(3/2)^3=

    asked on April 18, 2007
  14. Math

    The angle of elevation of the sun is 22 degrees. How long is the shadow of a 15m tree, to the nearest metre?

    asked on January 7, 2013
  15. Math Trig

    I have to find the x (bottom length of the triangle) in a right triangle. angle A is 33.9 degrees angle B is 90 degrees and the height of the triangle is 3.3cm What formula do I use to figure out this question?

    asked on January 7, 2013
  16. math

    Square cushion measures 65 cm by 65cm and 10 cm thick. I got help of the measurements from 1:20 scale to 3.25 by 3.25 by .5cm I drew out and labeled them. I need help with the next step. The square cushion is made of 3 component parts a top bottom and

    asked on January 7, 2013
  17. chemistry

    The following cell was observed to have an emf of 2.25 volts at 25.0oC : Zn(s) | Zn2+(aq, 0.143 M) || Cl2(g, 0.548 atm) | Cl-(aq, ?M) | Pt(s) . Use tables of standard reduction potentials in Petrucci to calculate the concentration of chloride ion in the

    asked on November 30, 2008
  18. English

    how do I analyze a story using tactics such as Formalist Biographical Psychological Historical Marxist New Historical Cultural Gender Feminist GLBTBC Mythology Reader response I have to analyze the story using any one of the tactics listed above.

    asked on March 21, 2015
  19. Math

    Square cushion measures 65 cm by 65cm and 10 cm thick. I got help of the measurements from 1:20 scale to 3.25 by 3.25 by .5cm I drew out and labeled them. I need help with the next step. The square cushion is made of 3 component parts a top bottom and

    asked on January 7, 2013
  20. Math

    A square cushion measures 65 cm by 65 cm and 10 cm thick. Using a scale of 1:20 draw views of the cushion and label them with their measurements. Can someone help me with this? How would I go about drawing them and using the scale for measurements?

    asked on January 7, 2013
  21. Math

    3(-2/3 + 4/9) The 2/3 and 4/9 are fractions. How do I figure this out?

    asked on October 16, 2012
  22. calculus ab

    What is the integral of sin4xcos4x dx?

    asked on January 8, 2009
  1. Science

    I used jezzmin answers and got 12 out 12

    posted on March 12, 2018
  2. math

    I am sooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo

    posted on November 25, 2017
  3. Statistical Math-


    posted on November 8, 2017
  4. statictics


    posted on April 22, 2017
  5. Physics


    posted on February 11, 2017
  6. Math

    more people moved than expected because 4% of 200 is 8 since there is 12 people who moved out of 7th grade. and 8 people are expected to move by the end of the year

    posted on August 5, 2016
  7. Math


    posted on April 13, 2016
  8. English

    Im analyzing "Bartleby, the Scrivener" by Herman Melville. I think that was a typo. It should have been LGBT. Thank you for respondinMs Sue.

    posted on March 21, 2015
  9. math

    Calculate the monthly finance charge for the credit card transaction. Assume that it takes 10 days for a payment to be received and recorded, and that the month is 30 days long. (Round your answers to the nearest cent.) $200 balance, 14%, $50 payment (a)

    posted on November 21, 2014
  10. HELP PLEASE!!!!!

    his horses name is Tuesday.

    posted on January 7, 2013
  11. math

    8 girls If there are 20 children and for every 3 boys there is 2 girls that's 5 children. 5x4 = 20 so in every 5 kids there is 2 girls. So then do 4x2 = 8

    posted on January 7, 2013
  12. Math (intergrated algebra)

    769.69 cubic inches You can solve this by doing Radius x radius x height x pi 7 x 7 x 5 x 3.14159

    posted on January 7, 2013
  13. Math

    thank you

    posted on January 7, 2013
  14. Math(Geometry)

    I just staarted Geometry this year and i was stuck on those same questions... thanks to the ppl who post ansewers... it was a BIG help... :)

    posted on August 21, 2008